Question

Why does this program only generate numbers from 0.1-0.2. It needs to generate numbers from 0-1.

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main (int argc, char *argv[])
{
    /*declare pseudo-random number */
    float random;
    srand(time(NULL));

    random = (float) rand() / (float) RAND_MAX;
    printf("The random number is %f\n", random);

    return 0;
}

I’m compiling using gcc on a mac.

Answer 1

The code seems fine to me. Try to generate more than one number and see then:

for(i=1; i<100; i++){
  random = (float) rand() / (float) RAND_MAX;
  printf("%f\n", random);
}